boulder rock

基本解释

The boulder, rock wall. bottom toe always appear in limestone mine mid deep bench blasting because of bedding, fault, joint and cave.
石灰石矿岩层较多，断层、节理裂隙和溶洞发育，爆破容易产生大块、岩墙和根底。
An subregional evaluation is made on destruction fatalness and destructiveness of mountain slope dangerous rock mass and boulder stone.
对山坡危岩体及孤石破坏类型的危险性和危害程度分区段进行评价；
Focal points can take many forms in landscapes and could range from a building or structure, a striking tree, a boulder or rock formation, a silhouette etc.
在风景摄影中，焦点可以以很多种形式出现，比如建筑物，树枝，一块石头或者岩层，一个轮廓等等。